Sadie Robertson offers another sneak peak at her new 2015 prom dress collection with Sherri Hill

so happy about my new prom dress line with @sherrihill coming out

Sadie Robertson shared her excitement about her upcoming prom dress line through Sherri Hill in a new photo on Instagram.

The dress line, like Robertson's book, is called "Live Original," and features a range of styles, fabrics, and colours chosen by the reality star.

On Wednesday, the 17-year-old shared a photo of herself modelling a pale, Tiffany blue dress with black polka dots, and black lace embroidery at the upper bodice. Robertson accented the look with black fingernail polish and a shimmer jewellery tattoo on her left forearm.

"So happy about my new prom dress line with @sherrihill coming out are y'all excited???" she asked her fans.

The teen debuted the "Sadie Robertson Live Original by Sherri Hill" line during New York Fashion Week 2013, and it appears more dresses may be available for purchase by the 2015 prom season.

The "Dancing with the Stars" runner-up has previously insisted that all of the dresses in the "Live Original" line will meet her father, Willie's, high standards.

"Me and my mother and my grandma went to Sherri Hill's place and we all picked out 'daddy-approved' length," Sadie told FOX & Friends last year. "She also added a couple inches to some that we loved but weren't modest."

In Robertson's new book, she discussed the joy of appearing in a NYFW fashion show, and also disappointment in how the models apparently treated her backstage.

The 17-year-old said she greeted the models with a "Hey, y'all," but "many of them did not say a single word back to me.

"They just looked at me like they had icicles in their eyes. Without using words, they sent me a strong message: 'What are you doing here?'"

The then 16-year-old said she took the cold reception in her stride, however.

"I could have totally lost it over the comments people made and the icy looks they gave me," she explained. "But I didn't. God had been training me all my life...to be strong and confident."